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1. (WO2014199318) METHOD FOR PREPARING NANOHYDROGEL
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/199318 International Application No.: PCT/IB2014/062138
Publication Date: 18.12.2014 International Filing Date: 11.06.2014
IPC:
C08J 3/075 (2006.01) ,A61K 47/36 (2006.01) ,A61L 2/04 (2006.01)
Applicants: NIOB SAGL[CH/CH]; c/o Stelva SA Via Guido Calgari, 2 I-6900 Lugano, CH
Inventors: DE RUGERIIS, Maria Cristina; IT
MONTANARI, Elita; IT
DI MEO, Chiara; IT
MATRICARDI, Pietro; IT
Agent: BOSMAN, Cesare; STUDIO TORTA S.p.A. Via Viotti, 9 I-10121 Torino, IT
Priority Data:
RM2013A00033911.06.2013IT
Title (EN) METHOD FOR PREPARING NANOHYDROGEL
(FR) PROCÉDÉ DE PRÉPARATION DE NANO-HYDROGEL
Abstract:
(EN) A method for preparing nanohydrogels comprising a dispersion step, in which a polysaccharide functionalized with hydrophobic molecules and in the form of a macromolecular agglomerate is dispersed in an aqueous solution, and a heating step, in which the aqueous dispersion of the polysaccharide is subjected to a temperature of between 70 °C and 150 °C and a pressure of between 1 bar and 5 bar. In the heating step, the conditions of temperature and pressure must be such that boiling of the aqueous dispersion of the polysaccharide does not take place.
(FR) Cette invention concerne un procédé de préparation de nano-hydrogels comprenant une étape de dispersion, consistant à disperser un polysaccharide fonctionnalisé avec des molécules hydrophobes et sous la forme d'un agglomérat macromoléculaire dans une solution aqueuse, et une étape de chauffage, consistant à soumettre la dispersion aqueuse du polysaccharide à une température entre 70 et 150°C et une pression entre 1 et 5 bar. Dans l'étape de chauffage, les conditions de température et de pression doivent être telles que l'ébullition de la dispersion aqueuse du polysaccharide ne se produit pas.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: Italian (IT)